填空题

(science)（）have done countless experiments to show that praise is far more effective than criticism in improving human behavior.

【参考答案】

Scientists
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单项选择题
Which of the following statements, is false according to the dialogue（）

A．He is doing research.
B．He works long hours in the lab.
C．He is making progress.
D．He was unhappy until recently.
填空题
In which way does English differ most from ChineseEnglish differs most from Chinese in（）
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